let ajaxTimes=0;
export const request=(params)=>{
  ajaxTimes++;

  wx.showLoading({
      title: '加载中',
      mask:true
    })
  
  return new Promise((resolve,reject)=>{
    
    wx.request({
      ...params,
      
     success:(result)=>{
       resolve(result);
     },
     fail:(err)=>{
       reject(err);
       
     },
     complete:()=>{
       ajaxTimes--;
       if(ajaxTimes==0){
       wx.hideLoading()
      }

     }
    })

  })
}